Environmentally Responsible
Design
The Fencing Academy of Philadelphia
Green Roof
Kelly C. Doyle
1.964
10/25/2006
The Project
The Fencing Academy of Philadelphia
Demonstration project by EPA
Roofscapes Inc.
•Area covered = 3,000 sq. ft.
•Total thickness = 2.74 inches
•Wet weight = 17 lb/sq. ft.
•Predicted 54% reduction in
annual runoff
Green Roof 101
From the Bottom Up
–Waterproofing Layer
–Drainage Layer
–Geotextile grid
–Soil Layer
–Organic humus material
–Shale/porous media
–Plant Layer
–Sedum
The Benefits
– Runoff Reduction
– Air & Water Quality
Improvements
– Aesthetic Improvements
– Reduced Urban Heat Island
More Benefits
• Temperature Mitigation
• Extended roof life
– Wear and tear
– Thermal expansion and contraction
– UV exposure
• Energy efficiency for building
Design
(Commons)
– Extensive ($8-20/sf) vs. Intensive ($15-25/sf)
(GLWI)
– Structural Integrity of the building
– Increased dead load ~15 psf wet
– Average rainfall
– Soil medium/ Plant species
– Geotextile Design
– Cost
Sources
–http://www.atmosphere.mpg.de/enid/Climate_in_brief/_Climate_in_Cities_2t9.html
–http://roofmeadow.com/projects/project2.shtml
–http://www.glwi.uwm.edu/research/genomics/ecoli/gre
enroof/roofinstall.php#costs
–http://commons.bcit.ca/greenroof/infrastructure.html